Quantitative classification and analysis of porosity within different lithofacies of the Upper Ordovician–lower Silurian shales, China

Yingzhu Wang and Jijin Yang

AAPG Bulletin

... between porosity and total organic carbon (TOC) content and suggested the predominant effect of OM richness on shale porosity (e.g., Milliken et al., 2013...

A Modern Day Geologic Hiatus

Edman R. Zink

Bulletin of South Texas Geological Society

... of the examples of failure to understand the cause and effect of depositional and structural changes are prominent in South Texas: In the early days of South...

A Modern Day Geologic Hiatus

Edman R. Zink

South Texas Geological Society Special Publications

... to understand the cause and effect of depositional and structural changes are prominent in South Texas: In the early days of South Texas drilling...

KINDERHOOK CONODONTS FROM LITTLE ROCKY MOUNTAINS, NORTHERN MONTANA*

M. M. KNECHTEL, W. H. HASS

Montana Geological Society

... fauna represented in random samples of several layers of the shale (USGS collection 8432) has been made by the junior author. Mr. C. L. Cooper...

Transgression and Regression: Relative Rates Based on Faunal Communities

Harold B. Rollins, Jack Donahue

Appalachian Geological Society

.... Faunal densities may be high locally, but "patchiness" would be the rule, a result of random colonization and inefficient utilization of resources...

SPCC Rules and 2002 Revisions - Workshop Summary

Michael W. Schmidt

PTTC

... OVERVIEW Introduction to SPCC Born of the Clean Water Act of 1972, the Oil Pollution and Prevention rules went into effect as the Spill Prevention...

Kortes Dam

Roger Rhoades

Wyoming Geological Association

... aerial photographs, but when viewed in detail at any specific locality, their orientations may be random and erratic. However, in several distinct...

Petrology of the Nugget-Navajo Sandstone at Outcrops Near Hanna, Utah, and Dinosaur National Monument

Robert B. Kayser

Utah Geological Association

... in the Nugget Sandstone is extremely variable and has a profound effect on the porosity and permeability. Secondary calcite is the most common cement...

Petroleum Hydrogeology

Parke A. Dickey

Tulsa Geological Society

..., the effect on oil accumulation is serious. In many cases the oil is completely flushed out of the sand. In others, the pools are merely tilted...

ABSTRACT: Coal metamorphism as a result of igneous intrusion in the Raton Basin, CO/NM: A preliminary report based on isotopic, petrographic and vitrinite reflectance data

J.R.Cooper, A.G.Whittington, S.M. Rimmer, J.Crelling

The Society for Organic Petrology (TSOP)

... (wt.%), mean random vitrinite reflectance R0 (%), and carbon isotopes (∂13C, ‰) across two dikes near Morley Dome. At all contacts, metamorphosed coals...

ABSTRACT: Geologic Controls on Type Producing AreasŽ (TPAs) in the Fruitland Coal Bed Gas Field, New Mexico and Colorado

Jeffrey R. Levine, Reed H. Meek

The Society for Organic Petrology (TSOP)

..., however, thermal maturity appears to have the dominant influence. Vitrinite reflectance (mean, random) increases from 0.45% in TPA1 to 1.6% in TPA4...

Comparative Analysis of Methods of Determining Open Porosity

G. D. Sarayeva, A. A. Khanin

Petroleum Geology: A Digest of Russian Literature

... to the law of accumulation of random errors (3). In the determination of open porosity the Preobrazhenskiy method, the error depends on the accuracy...

Use of High-Accuracy Gravity Surveying on the Sorkuduk Cupola

O. A. Belkin, V. M. Berezkin, I. N. Shcherbakova

Petroleum Geology: A Digest of Russian Literature

.... The positive property of the function Gx,y is less sensitive than other functions to random error of variation of gravity. Transposing to normal vertical...

Mounting Technique for Grain Size and Shape Measurement

C. W. H. Hulbe

Journal of Sedimentary Research (SEPM)

... to achieve their proper position. It is advisable to mount more grains than will be needed for measurement and then one may random sample the mounted set...

ABSTRACT: Matrix-Gel Vitrinite Types and Rock-Eval Analysis of Coal Samples, Cretaceous Age, from the San Juan and Piceance Basins, USA

Ronald W. Stanton, Dudley D. Rice, Jerry Clayton, Romeo M. Flores

The Society for Organic Petrology (TSOP)

...% reflectance, Sl + S2 yields less than 50 kg/ton of rock correspond primarily to the amount of fluorescing vitrinite and mean random vitrinite...

Comparison of the Descriptors of Sediment Grain-Size Distributions: DISCUSSION

Basanta K. Sahu

Journal of Sedimentary Research (SEPM)

..., that is, generating the cumulative size distribution of sand grains in the sandstone from the corrected moments (Corrected f r the effect of random thin...

Feeding Sea Birds as a Factor in Lamellibranch Valve Sorting Patterns

R. W. G. Carter

Journal of Sedimentary Research (SEPM)

... stranded near the high water mark, following storms. These were subsequently preyed upon by feeding oyster-catchers. Random samples of the attacked...

Preface to Part II: Chapter 10: Part II. Secondary Migration and Accumulation of Petroleum, Compiled by Robert H. Dott and Merrill J. Reynolds

AAPG Special Volumes

... to be dry, waterbearing, or too tight to produce hydrocarbons on other structures in the same geological province; accumulations were found by random...

Porosity Preservation in the Upper Smackover (Jurassic) Carbonate Grainstone, Walker Creek Field, Arkansas: Response of Paleophreatic Lenses to Burial Processes: REPLY

Clyde H. Moore, Frank C. Brock, Jr.

Journal of Sedimentary Research (SEPM)

... of hydrocarbon arrival relative to these late cements was very close however, because the calcite quite often contains random, tiny inclusions of light-color d...

Palimpsest Drainage and Chungchou Photogeologic Anomaly, Taiwan: GEOLOGICAL NOTES

Arthur D. Howard

AAPG Bulletin

...-south, normal to the regional slope. The present drainage pattern was then carefully plotted. This was difficult in places due to the obscuring effect...

Time Correlation on Basis of Magnetic Data

R. S. Briggs

AAPG Special Volumes

... assume that the orientation is random through time with equal probabilities for normal and reversed polarity. Most rocks acquire an NRM orientation...

CO2 Sequestration Potential in the Rose Run Formation at the Mountaineer Power Plant, New Haven, West Virginia

Diana H. Bacon, Mark D. White, Neeraj Gupta, Joel R. Sminchak, Mark E. Kelley

AAPG Special Volumes

... random seed as a 2-D sequential Gaussian simulation that resulted in a near-average CO2 injection rate, was used as the basis for both vertical...

Upper Cretaceous Shallow Benthic Biozones (KSBZ): a Preliminary Report; #90017 (2003)

Esmeralda Caus, Josep M. Bernaus, Carme Boix, Amelia Calonge, Ruben Perez

Search and Discovery.com

... be disaggregated and their fossil content has to be identified in thin slides or on fresh fractions with a hand lens in random sections. In the last...

ABSTRACT: Microstructural Observations in Gas Shales; #90122 (2011)

Mark Curtis, Carl Sondergeld, Ray Ambrose, and Chandra Rai

Search and Discovery.com

... are “random” in the sense that we did not drive selection by any independent control such as mineralogy, porosity, TOC, etc. Each image was taken...

Abstract: Keep An Eye On Your Basement! It Is The Foundation Of The Overlying Stratigraphy And Structure; #90213 (2015)

John W. Peirce and Lisa A. Griffith

Search and Discovery.com

... can also have a major effect on the development of fold and thrust systems in later orogenies. In addition to the inversion structures mentioned above...